Mill-type door



April23, 1-929. J. w. ORRocK 1,710,108

MILL TYPE DOOR Filed Dec'. 18, 1926 f5 Sheets-Sheet I gwventoz April 23,1929, 1 W, ORRQCK 1,710,108

MILL TYPE DOOR Filed Dec. 18, 192e 3 sheets-sheet 2 l gwuentoz PatentedApr. 233, 1929.

UNITE- omas,

JOHN WILSON ORROCK, or MONTREAL, QUEBEC, CANADA.

MILLTYPE noon."

Appncatien med/December 18,1926. seriai iva-155,616.

This inventionl relates to doors, andlmore particularly' toa heavydutyfdoor adapted for use in' mills,fwarehouses and other pla'cesrequiring largedoors; y

A primary object of the invention is to provide a door of the characterset 4forth including a metal frame carrying therewith a non-metalliclller` the said frame being a rigid rse'lf-sustaining structureand-serving asv a base' for attachment of hinges,

hangers and door supports.y In that connection it is proposed to providea construction wherein the door and its' supports provide `av metaltoimeta'l Contactv whenfh-ung, in contrast with the usual metal towoodconstruction.

Another object ofthe invention is to provide a constructioii wherein no'strain whatever is imposed on any of' the wood members, the weight beingcarriedby the metal frame to which the hangers or hinges are attached,and therefore the door', when hung, will not sag, warp' and pull` apartas is frequently the ease with ordinary doors'.

A further object of the invention is to* provide a mill-type metal framedoor that is niuch stronger than the ordinary wood door of the samesizev andconsequent-ly does not require as heavyy hardware or supports;takes up less room; is easier to handle, and can be housed snugge'r thanthe ordinary door.

Vith the above'and other objects in view which ywill more readilyappear' as the nature of the invention;l is better understood, the

same 'consists in the novel'construction; combination and arrangementof: parts hereina-ttor morefully described, illustrated' and claimed.

A preferred and'prac'tical embodiment'of the invention is shown in theaccompanyin g drawings in which Figure l" is a. perspective view of adoor constructed in accordance' witli tliepr'e'sent invention:

Figure 2 is a horizontal sectional view taken on the line Z-Qof Figurel.

Figure 3 is a detail perspective view of the metallic frame ofthe door.

Figure 4 is a view illustrating a modified typefof door mounted onhinges.`

Figure 5 is an enlarged detail sectional view taken `onthe line 5*-5 ofFigureit.

Figure'G'is a detail sectional view taken on the lineG-'G 'of Figure 3.

Figure 7 is an enlargedfragmentary sectional viiew showing a modifiedform of' ver-r tical frame member.

`Similar reference characters designate corresponding parts throughoutrthe several figures of the'fdrawings. i f i 1 As heretofore indicated,a distinctive feature of the invention is to provide an all metal doorframing'which carries the entire weight ofthe door and thus` relievesthe non-metallictiller of an'ystrain or pressure. Accordingly, aswill beobserved from Fig` ures 1 and'rit is' proposedy to provide a doorincluding the rigid rectangular metal frame worlrA and the `non-metallicliller B which ispreferably of stout wood strips of suitablecross-sectional form;

Themetallic frame A includes in its organization, the'side trame members1 and substantially triangular formation and have an offset flangeportion 5a for engaging with the' top and bottom edges of the. channelframe members 3 and 4 respectively at the saine time providingadditional stitr'ening and i'eint'orcen'ient because of their flangedformation; f j

Iti willthus be apparent that the frame A consists of structural metalshapes heldy rigidly in position by the'reinforeing gusset or cornerplates 5 thereby providing a' rigid and stablerectangular frame forreceiving the lille'r or panel Bv whichV preferabtT is made ofinterlocking tongue and groove strips Gjnailed as' indicated' atm (Fig.yl) or otherwise fastenedv each to the other as they are put in theframe. As shown in the drawings, the heads of the nails for securing onestrip in place are covered by the neXt adjacent strip so that all of thefastenings for the strips are completely concealed. The upper and lowercut edgesof the wooden panel strips 6 Vsnugly lit within the channelmembers 3 and4 so as to be firmly secured at their ends as well asprotected against the weather, and the shank or web portion n of thevertical members 1 and 2 is clamped between the end members 6 arrangedat the vertical marginal edges of the panel, as best seen in Figure 2. yi

Figure 7 of the drawings illustrates .a

ymodified form of vertical frame member la which also is of'channelformation like the `members 3 and 4. In this forni of construction thewooden strips may seat in the channel and are therefore secured andconcealed at their edges. f

Figures 4 and 5 of the drawings illustrate an embodiment of theinvention as applied to doors of the hinged type. In Vthis form of theinvention, each door includes a metallic self-sustaining frame A and thenon-metallic filler or panel B. The frame A includes the vertical metalframe members l and 2d which are connected by the horizontal top andbottom lframe members 3 and 4a as well as the intermediate rail 7. Inorder to add stability to theframe, diagonal braces 8 are used at theinside of the panel or filler A. Also, the horizontal and vertical framemembers of the door are'y connected by the c triangular gusset plates 9which reinforce the junctions of the horizontal and vertical framemembers. Inaddition to reinforcing these vframe members, as justindicated, the gusset plates afford meansV for attaching the stripportions of the hingesv 10 so that the door is adequately supported atthe door opening.

The wooden panel or filler B of the type of door shown in Figures 4 and5 of the drawings preferably corresponds to the Ypanel or filler of thedoor construction shown in Figures l and 2 0f the drawings. That is tosay, the panel or filler BYpreferably is `of the mill-type construction,the same conit is preferable to provide a substantial marginal woodenframing 'surrounding the metal door frame, the said vwooden framingconsisting of a plurality of relatively wide wooden strips l1 securedeach to the other by nailing or otherwise as indicated at w, and fittedin the outer angles and against the -webs of the frame irons or membersl and 2.

In the form of invention shown in Figure 4.of the drawings there issuggested the featureof a wicket IV which maybe utilized for accessthrough the large door when it is not necessary nor desired to employthe full door-opening for entrance or exit.

It will be readily apparent that both of the foregoing describedconstructions fulfill the distinctive object of providing theselfsustaining metallic frame (A or A) for carrying the `full load orweight of the door without imposing any of the stress or strain on thewooden fillers. rlhus the rigid frame aifords convenient means forsupporting the entire door through the medium ofthe hangers rH in Figurel which shows a sliding Atype* of door or on the Vhinges l() in theswinging type of door in Figures 4 and 5. This construction results in ainuch stronger door than an ordinary wooden door of the same size andalso provides a slow burning structure which for all ordinary purposesis practically fire safe. Furthermore, due to the combination of themetal frame and the hinges or hangers, an all-metal Vsupport isprovidedwhich does not sag or wear like the ordinary door whereinr thehinges or hangers are secured to the wood part of the door by bolts orscrews. Thus, the present construction is to be distinguished fromwooden or yother non-metallic doors which merely have metallicy edgeguards or the like and which depend for their anchorage and support uponthe, wooden or non-metallic part of the door itself.

From the foregoing now will have been observed that the door hangermembers or the door hinge members are riveted or fastened directly tothe metal frame work of the door, and particularly to the strong andwell reinforced corner parts thereof. Thus, the door hanger or doorhinge members are in effect an integral and rigid part of the fra-me,and where the'said hangers or Vdoor hinge members are located, the metalframe is well and strongly reinforced. Consequently, t-he use of boltsis entirely dispensed with in securing the hangers or hinge parts to thedoor frame, and thefcombination provides hangers and hinges which are apart of the metal frame, being rigid therewith so that an all-metalsupport for rthe door is provided which does not sag or wear like theordinary door where the hanger parts or the hinge parts are secured towood ,by bolts or screws.

lil)

may be resorted to Without departing from the spirit oi the inventionand scope of the appended claim.

I elaimz-f n i A heavy-duty mill-type door Comprising two componentparts, namely, a self-'sustaining rectangular metallic frame 'fabricatedwith Structural metallic shapes having Het outer faces and gusset platesSecured to seid y faces and having offset flanges for engaging theyouter edges of the 'frame members at the top and bottom ofthe door, anda Wooden filler arrangedfwithin and supported by said frame. l

In testimony whereof I hereunto aix my Signature.

JOHN WILSON ORROCK.

